Electroweak Radiative Corrections to Resonant Charged Gauge Boson Production
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The electroweak O(alpha) contribution to the resonant single W production in a general 4-fermion process is discussed with particular emphasis on a gauge invariant decomposition into a QED-like and weak part. The cross section in the vicinity of the resonance can be represented in terms of a convolution of a `hard' Breit-Wigner-cross section, comprising the (m_t,M_H)-dependent weak 1-loop corrections, with an universal radiator function. The numerical impact of the various contributions on the W line shape are discussed, together with the concepts of s-dependent and constant width approach. Analytic formulae for the W decay width are also provided including the 1-loop electroweak and QCD corrections.
49 pages, LaTeX source and 17 postscript figures, revised version with few minor changes, accepted for publication in Phys.Rev.D
49 pages, LaTeX source and 17 postscript figures, revised version with few minor changes, accepted for publication in Phys.Rev.D